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배터리 전압변동에 따른 화재 판단 기준값 보정이 가능한 연기 감지 알고리즘 개
고상민,이종원,김윤수,트란민,김세엽,김경달 한국멀티미디어학회 2023 멀티미디어학회논문지 Vol.26 No.11
In an automatic fire detection facility to be installed in an underground utility tunnel, the problem of the smoke measurement sensitivity changing according to the battery remaining amount of the smoke detector was compared with the statistical sensitivity value calculated according to the battery voltage. The smoke correction value corresponding to the current voltage value was added or subtracted from the fire standard value every time smoke was read, and a firmware was studied that enables constant fire detection even when the battery voltage fluctuations
RF 열플라즈마를 이용한 TEOS로 부터의 SiC 나노분말 합성
고상민,구상만,김진호,김지호,변명섭,황광택,Ko, Sang-Min,Koo, Sang-Man,Kim, Jin-Ho,Kim, Ji-Ho,Byeon, Myeong-Seob,Hwang, Kwang-Taek 한국세라믹학회 2011 한국세라믹학회지 Vol.48 No.1
Silicon carbide (SiC) has recently drawn an enormous industrial interest because of its useful mechanical properties such as thermal resistance, abrasion resistance and thermal conductivity at high temperature. RF Thermal plasma (PL-35 Induction Plasma, Tekna CO., Canada) has been utilized for synthesis of high purity SiC powder from cheap inorganic solution (Tetraethyl Orthosilicate, TEOS). It is found that the powders by thermal plasma consist of SiC with free carbon and amorphous silica ($SiO_2$) and, by thermal treatment and HF treatment, the impurities are driven off resulting high purity SiC nano-powder. The synthesized SiC powder lies below 30 nm and its properties such microstructure, phase composition, specific surface area and free carbon content have been characterized by X-ay diffraction (XRD), field emission scanning electron microscopy (FE-SEM), thermogravimetric (TG) and Brunauer-Emmett-Teller (BET).
고상민,김상균 한국고무학회 2023 엘라스토머 및 콤포지트 Vol.58 No.4
Recently, there has been a significant focus on the development of flexible and stretchable sensors, driven by advancements in electronic devices and the robotics industry. Among these sensors, tactile sensors stand out as the most actively researched, playing a crucial role in facilitating interaction between humans and electronic devices, particularly in robotics and medical applications. This study specifically involves the manufacturing of a capacitive tactile sensor using a relatively straightforward process and sensor structure. Natural rubber and Nitrile butadiene rubber, commonly employed in the rubber industry, were utilized. The dielectric material in the manufactured tactile sensor possesses a porous structure. Notably, the resulting tactile sensor demonstrated excellent sensitivity, approximately 1%/kPa, and exhibited the capability to detect pressures up to 212 kPa.
RF 유도 열플라즈마를 이용한 유기 용매로 부터의 탄화규소 나노 분말 합성
고상민,구상만,김진호,조우석,황광택 한국세라믹학회 2012 한국세라믹학회지 Vol.49 No.6
Silicon carbide (SiC) has recently drawn an enormous amount of industrial interest due to its useful mechanical properties, such as its thermal resistance, abrasion resistance and thermal conductivity at high temperatures. In this study, RF thermal plasma (PL-35 Induction Plasma, Tekna CO., Canada) was utilized for the synthesis of high-purity SiC powder from an organic precursor (hexamethyldisilazane, vinyltrimethoxysilane). It was found that the SiC powders obtained by the RF thermal plasma treatment included free carbon and amorphous silica (SiO2). The SiC powders were further purified by a thermal treatment and a HF treatment, resulting in high-purity SiC nano-powder. The particle diameter of the synthesized SiC powder was less than 30 nm. Detailed properties of the microstructure, phase composition, and free carbon content were characterized by X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), a thermogravimetric (TG) analysis, according to the and Brunauer-Emmett-Teller (BET) specific surface area from N2 isotherms at 77 K.